Genetic variation, population structure and linkage disequilibrium in peach commercial varieties.

ABSTRACT:

Background

Peach [Prunus persica (L.) Batsch] is one of the most economically important fruit crops that, due to its genetic and biological characteristics (small genome size, taxonomic proximity to other important species and short juvenile period), has become a model plant in genomic studies of fruit trees. Our aim was an in-depth study of the extent, distribution and structure of peach genetic variation in North American and European commercial varieties as well as old Spanish varieties and several founders used in the early USA peach breeding programmes. For this we genotyped 224 peach cultivars using 50 SSRs evenly distributed along the 8 linkage groups of the Prunus reference map.

Results

Genetic distance analysis based on SSRs divided the peach cultivars in three main

SUBMITTER: Aranzana MJ 

PROVIDER: S-EPMC2915947 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature